:root {
    --ink: #10202b;
    --muted: #687985;
    --snow: #f5f7f4;
    --surface: #ffffff;
    --line: #d7e0de;
    --night: #142a3a;
    --blue: #2d6f8f;
    --green: #4f8a7b;
    --moss: #c4d6a0;
    --gold: #e1b85f;
    --rose: #c86d5b;
    --shadow: 0 26px 80px rgba(16, 32, 43, .14);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 94px;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--snow);
    font-family: Arial, "Helvetica Neue", system-ui, sans-serif;
    line-height: 1.65;
}

a {
    color: var(--blue);
}

.site-header {
    background: rgba(245, 247, 244, .86);
    border-bottom: 1px solid rgba(20, 42, 58, .08);
    backdrop-filter: blur(20px);
    transition: background .2s ease, box-shadow .2s ease, min-height .2s ease;
}

.site-header.is-fixed {
    background: rgba(255, 255, 255, .95);
    box-shadow: 0 12px 34px rgba(16, 32, 43, .09);
}

.navbar {
    min-height: 84px;
    padding-block: 13px;
}

.site-header.is-fixed .navbar {
    min-height: 68px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--night);
    font-weight: 900;
    white-space: normal;
}

.site-logo:hover,
.site-logo:focus {
    color: var(--blue);
}

.site-logo__icon {
    display: inline-flex;
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    align-items: center;
    justify-content: center;
    border-radius: 14px 14px 14px 3px;
    background: linear-gradient(135deg, #e8f0ed, #ffffff);
    box-shadow: inset 0 0 0 1px rgba(20, 42, 58, .14), 0 10px 24px rgba(16, 32, 43, .1);
}

.site-logo__text {
    max-width: 340px;
    font-size: clamp(1rem, 2vw, 1.42rem);
    line-height: 1.05;
    letter-spacing: .03em;
}

.nav-link {
    color: var(--ink);
    font-size: .93rem;
    font-weight: 760;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--blue);
}

.hero-section,
.track-section,
.method-section,
.reviews-section,
.faq-section,
.contact-section {
    padding-block: 92px;
}

.hero-section {
    padding-top: 150px;
    background:
        radial-gradient(circle at 80% 16%, rgba(196, 214, 160, .7), transparent 25%),
        linear-gradient(145deg, #f5f7f4 0 48%, #dce9e7 48% 100%);
}

.section-offset {
    scroll-margin-top: 94px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr);
    grid-template-areas:
        "copy visual"
        "badges visual";
    gap: 34px 56px;
    align-items: end;
}

.hero-copy {
    grid-area: copy;
}

.hero-visual {
    grid-area: visual;
    position: relative;
    margin: 0;
    border-radius: 40px 8px 40px 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-visual::after {
    position: absolute;
    right: 22px;
    bottom: 22px;
    width: 76px;
    height: 76px;
    border: 2px solid rgba(255, 255, 255, .8);
    border-radius: 50%;
    background: rgba(20, 42, 58, .88);
    color: #fff;
    content: "SE";
    display: grid;
    place-items: center;
    font-weight: 900;
    letter-spacing: .08em;
}

.hero-visual img {
    display: block;
    width: 100%;
    height: auto;
}

.hero-badges {
    grid-area: badges;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.hero-badges span {
    min-height: 58px;
    border: 1px solid rgba(20, 42, 58, .12);
    border-radius: 16px 16px 16px 4px;
    padding: 12px;
    background: rgba(255, 255, 255, .72);
    color: var(--night);
    font-size: .9rem;
    font-weight: 820;
}

.eyebrow {
    margin-bottom: 14px;
    color: var(--blue);
    font-size: .78rem;
    font-weight: 850;
    letter-spacing: .11em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    overflow-wrap: anywhere;
    hyphens: auto;
    line-height: 1.1;
    letter-spacing: 0;
}

h1 {
    max-width: 820px;
    margin-bottom: 22px;
    font-size: clamp(2.45rem, 5vw, 5rem);
    font-weight: 900;
}

h2 {
    margin-bottom: 18px;
    font-size: clamp(2rem, 3.4vw, 3.35rem);
    font-weight: 870;
}

h3 {
    font-size: 1.12rem;
    font-weight: 840;
}

.lead {
    max-width: 690px;
    color: var(--muted);
    font-size: 1.18rem;
}

.section-heading {
    max-width: 820px;
    margin-bottom: 34px;
}

.track-section {
    background: var(--night);
    color: #fff;
}

.track-section .eyebrow,
.track-section h2 {
    color: #fff;
}

.track-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border: 1px solid rgba(255, 255, 255, .18);
}

.track-item {
    min-height: 270px;
    padding: 30px;
    border-right: 1px solid rgba(255, 255, 255, .18);
    background: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02));
}

.track-item:last-child {
    border-right: 0;
}

.track-item span {
    display: inline-flex;
    margin-bottom: 72px;
    color: var(--moss);
    font-size: .92rem;
    font-weight: 900;
}

.track-item p {
    color: rgba(255, 255, 255, .72);
}

.method-section {
    background: #ffffff;
}

.method-note {
    position: relative;
    border-radius: 26px 26px 6px 26px;
    padding: 34px;
    background: var(--moss);
}

.method-note::after {
    position: absolute;
    right: -18px;
    bottom: -18px;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: var(--gold);
    content: "";
}

.method-text {
    display: grid;
    gap: 18px;
}

.method-text p {
    margin: 0;
    border-bottom: 1px solid var(--line);
    padding-bottom: 20px;
    color: var(--muted);
    font-size: 1.06rem;
}

.reviews-section {
    background:
        linear-gradient(90deg, rgba(45, 111, 143, .08) 1px, transparent 1px),
        linear-gradient(#f5f7f4, #eef4f0);
    background-size: 82px 82px;
}

.reviews-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px;
    align-items: end;
    margin-bottom: 32px;
}

.rating-summary {
    min-width: 180px;
    border-radius: 22px 6px 22px 6px;
    padding: 20px;
    background: var(--night);
    color: #fff;
}

.rating-summary strong {
    display: block;
    font-size: 1.7rem;
    line-height: 1;
}

.rating-summary span {
    color: rgba(255, 255, 255, .7);
}

.review-stack {
    display: grid;
    gap: 18px;
}

.review-card {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr) 180px;
    gap: 24px;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 22px 6px 22px 6px;
    padding: 24px;
    background: #fff;
    box-shadow: 0 18px 50px rgba(16, 32, 43, .08);
}

.stars {
    color: var(--gold);
    font-size: 1.05rem;
    letter-spacing: .05em;
}

.review-card p {
    margin: 0;
    color: var(--muted);
}

.review-card h3 {
    margin: 0;
    text-align: right;
}

.faq-section {
    background: #fff;
}

.faq-layout {
    display: grid;
    grid-template-columns: minmax(260px, .55fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
}

.accordion {
    display: grid;
    gap: 12px;
}

.accordion-item {
    border: 1px solid var(--line);
    border-radius: 8px !important;
    overflow: hidden;
}

.accordion-button {
    min-height: 68px;
    font-weight: 800;
}

.accordion-button:not(.collapsed) {
    background: #eaf2ef;
    color: var(--night);
    box-shadow: none;
}

.accordion-button:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 .2rem rgba(45, 111, 143, .18);
}

.accordion-body {
    color: var(--muted);
}

.contact-section {
    background: var(--night);
    color: #fff;
}

.contact-section .eyebrow,
.contact-section h2 {
    color: #fff;
}

.contact-section p {
    color: rgba(255, 255, 255, .74);
}

.contact-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, .48fr);
    gap: 34px;
    align-items: center;
}

.contact-box {
    display: grid;
    gap: 10px;
    margin: 0;
    border-radius: 28px 28px 8px 28px;
    padding: 30px;
    background: #fff;
    color: var(--ink);
}

.contact-box span:first-child {
    font-weight: 850;
}

.contact-box a {
    font-size: 1.12rem;
    font-weight: 820;
    word-break: break-word;
}

.site-footer {
    padding-block: 26px;
    background: #0c1820;
    color: rgba(255, 255, 255, .74);
    font-size: .95rem;
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        padding: 18px 0 10px;
    }

    .nav-link {
        padding-block: 10px;
    }

    .hero-section {
        padding-top: 124px;
    }

    .hero-grid,
    .reviews-head,
    .faq-layout,
    .contact-panel {
        grid-template-columns: 1fr;
    }

    .hero-grid {
        grid-template-areas:
            "copy"
            "visual"
            "badges";
    }

    .track-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .track-item:nth-child(2) {
        border-right: 0;
    }

    .track-item:nth-child(1),
    .track-item:nth-child(2) {
        border-bottom: 1px solid rgba(255, 255, 255, .18);
    }

    .review-card {
        grid-template-columns: 1fr;
    }

    .review-card h3 {
        text-align: left;
    }
}

@media (max-width: 575.98px) {
    .method-note::after {
        right: 0;
    }

    html {
        scroll-padding-top: 82px;
    }

    .site-logo__text {
        max-width: 220px;
        font-size: .92rem;
    }

    .site-logo__icon {
        width: 40px;
        height: 40px;
    }

    .hero-section,
    .track-section,
    .method-section,
    .reviews-section,
    .faq-section,
    .contact-section {
        padding-block: 64px;
    }

    .hero-section {
        padding-top: 116px;
    }

    .hero-badges,
    .track-list {
        grid-template-columns: 1fr;
    }

    .track-item,
    .track-item:nth-child(2) {
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, .18);
    }

    .track-item:last-child {
        border-bottom: 0;
    }

    .track-item span {
        margin-bottom: 38px;
    }
}